linux-kernel - [PATCH 1/3] infiniband: hw: hfi1: verbs.c: Use built-in RCU list checking

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Message-Id: <20200114162345.19995-1-madhuparnabhowmik04@gmail.com>
Date:   Tue, 14 Jan 2020 21:53:45 +0530
From:   madhuparnabhowmik04@...il.com
To:     mike.marciniszyn@...el.com, dennis.dalessandro@...el.com,
        jgg@...pe.ca, paulmck@...nel.org
Cc:     joel@...lfernandes.org, frextrite@...il.com,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        rcu@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Madhuparna Bhowmik <madhuparnabhowmik04@...il.com>
Subject: [PATCH 1/3] infiniband: hw: hfi1: verbs.c: Use built-in RCU list checking

From: Madhuparna Bhowmik <madhuparnabhowmik04@...il.com>

list_for_each_entry_rcu has built-in RCU and lock checking.
Pass cond argument to list_for_each_entry_rcu.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik04@...il.com>
---
 drivers/infiniband/hw/hfi1/verbs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index 089e201d7550..22f2d4fd2577 100644
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -515,7 +515,7 @@ static inline void hfi1_handle_packet(struct hfi1_packet *packet,
 				       opa_get_lid(packet->dlid, 9B));
 		if (!mcast)
 			goto drop;
-		list_for_each_entry_rcu(p, &mcast->qp_list, list) {
+		list_for_each_entry_rcu(p, &mcast->qp_list, list, lockdep_is_held(&(ibp->rvp.lock))) {
 			packet->qp = p->qp;
 			if (hfi1_do_pkey_check(packet))
 				goto drop;
-- 
2.17.1